1999 yukon

  1. Big_easy

    99 gmc Yukon 5.7 shake.

    Hello everyone, I have a 99 Yukon 5.7 vortec and my issue is that when driving once my truck shifts into overdrive and my rpm’s are low between 40mph and 60mph I got a shake not a crazy bad one but enough to notice the difference but once I give it a little throttle and it downshifts the shake...
  2. G

    P300 code while driving

    I have a 1999 Yukon with just under 310,000 miles on it. The other day I was driving it and it was running fine. I stopped at a red light. When the light turned green I stepped on the gas and the engine began running very roughly. I managed to get it home. When I started it the next day the...

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